Jetje Berkhof was a daughter of Hartog Abraham Berkhof and Simmetje Slomper. She married 12 December 1894 in Amsterdam to Joseph Swaab, a son of Benedictus Salomon Swaab and Rebecca Koen. The couple had twelve children, of whom one son has died in 1904, only 2 years old and three children have survived the war. Eight children have been killed during the Holocaust: Benedictus, Hartog, Mozes, Sient…